int cannot be null in Java

[Ce...@linedata.com]

hi,
i have a web service that has a method that takes an int argument.
That argument is not compulsory but an int cannot be null in Java (but an 
Integer can be null).


public MyObject methodName(String a, int b) {
        //blabla
}


how do you deal with this ? 
thanks for helping.

I am using Axis 1.2